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Demographic characteristics of autism cases, parents of cases, and controls in this study
| Characteristic | Control | Autism | Mother | Father |
|---|---|---|---|---|
| Number | 29 | 75 | 40 | 39 |
| Age, median (interquartile range), months | 152 (34) | 83 (51) | 501.5 (94.7) | 504 (63) |
| Male, number (%) | 18 (62) | 62 (83) | 0 (0) | 39 (100) |
| Ethnicity, number (%) | ||||
| White | 27 (93) | 71 (95) | 39 (98) | 38 (97) |
| Asian | 1 (3) | 2 (3) | 0 (0) | 0 (0) |
| Unknown | 1 (3) | 2 (3) | 1 (3) | 1 (3) |
